A bullet from the ground is just able to cross in a horizontal directin the to of a wall 50 m away and 25 m high .Find the speed and direction of projection of the bullet.

A bullet fired at an angle of 30^@ with the horizontal hits the ground 3.0 km away. By adjusting its angle of projection, can one hope to hit a target 5.0 km away ? Assume the muzzle speed to be fixed, and neglect air resistance.

A bullet fired at an angle of 30^@ with the horizontal hits the ground 3.0 km away. By adjusting its angle of projection, can one hope to hit a target 5.0 km away? Assume the muzzle speed to be fixed and neglect air resistance.

A long straight wire in the horizontal plane carries a current of 50 A in north to south direction. Give the magnitude and direction of B at a point 2.5 m east of the wire.

A ball is projected from O with an intial velocity 700 cm/s in a direction 37^@ above the horizotal. A ball B, 500 cm away from O on the line of the intial velocity of A, is released from rest at the instant A is projected. Find the direction and magnitude of the velocity A at the time of impact. [given g = 10m//s^2, sin37^@ = 0.6 and cos37^@ = 0.8]

A constant force acting on a body of mass 3.0 kg changes its speed from 2.0 m s^-1 to 3.5 m s^-1 in 25 s. The direction of the motion of the body remains unchanged. What is the magnitude and direction of the force ?

On a long horizontally moving belt (Fig. 3.26), a child runs to and fro with a speed 9 km h^-1 (with respect to the belt) between his father and mother located 50 m apart on the moving belt. The belt moves with a speed of 4 km h^-1 . For an observer on a stationary platform outside, what is the:- speed of the child running in the direction of motion of the belt ?.